You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
The application allows users to post comments to a page that can be viewed by other users.
You add a SqlDataSource control named SqlDS
1. You write the following code segment. (Line numbers are included for reference only.)

01 Private Sub SaveComment()
02 Dim ipaddr As String
03
04 SqlDS1.InsertParameters("IPAddress").DefaultValue = ipaddr
05 ‘…
06 SqlDS1.Insert()
07 End Sub

You need to ensure that the IP Address of each user who posts a comment is captured along with the user’s comment.
Which code segment should you insert at line 03?

A.
ipaddr = Server("REMOTE_ADDR").ToString()

B.
ipaddr = Session("REMOTE_ADDR").ToString()

C.
ipaddr = Application("REMOTE_ADDR").ToString()

D.
ipaddr = Request.ServerVariables("REMOTE_ADDR").ToString()